iDP3420/3421/3423 User ’s Manual
10.3.6Electrical Characteristics
(1)RS-232C circuit
Input (RXD, DSR, mRXD)
[Printer Side] | [Host Side] |
RXD
Space=(+8V): Start bit
Equivalent MAX232
Output (DTR, TXD, mTXD, RCH, RTS, FAULT)
|
|
| Equivalent to MAX232 |
|
| DTR | |||
| TXD |
| ||
|
|
| Space=(+8V): At Ready | Space=(+8V): 0 |
(2) Others |
|
| ||
• |
|
|
|
|
RESET | : A signal to reset the entire printer. |
| ||
• PE | : A signal to show that the paper has run out. | Normal at the "LOW" level, but turned | ||
|
|
| to the "HIGH" level when the paper has run out. | |
• GND | : Signal ground |
| ||
• FG | : Frame ground |
| ||
37 | CITIZEN |
